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Quantum Optics with Recoiled Free Electrons (2405.06560v1)

Published 10 May 2024 in quant-ph

Abstract: Quantum states of light play a key role in modern quantum science, but creating hybrid quantum light-matter states remains a challenge. A promising basis for the creation of hybrid states is the interaction of free electrons with photons, which has so far been largely implemented without taking into account electron quantum recoil effects. We provide an analytical quantum electrodynamics-based framework for quantum optics with recoiled electrons and introduce a single recoil parameter $\sigma$. With this framework, we show how to generate photon and electron-photon Bell, Greenberger-Horne-Zeilinger (GHZ) and NOON states, coherent states, squeezed vacuum (including bright squeezed vacuum) and twin beams. We analyze the transition between these states and predict a new class of photon and electron-photon quantum states shaped with the photon recoil effect (recoil-induced shaping). These results have wide potential applications including quantum computing and communication with photons and free electrons, and open up a novel avenue for ultrafast electron microscopy and next-generation free-electron sources.

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